rlt and Algoma:
The covers on your head lights can be polished back to clear with a plexiglass polishing and scratch remover kit, or just by using wet sand paper, very fine steel wool or compounds with the right grit. I've seen the discussion here, before, as well. Headlight discussion. Another headlight discussion.
Two sources for kits are aquarium stores and amazon.com (search: headlight scratch kit. Two appear). Home Depot, Pep Boys, and automotive paint supply shops also carry everything that is required.
The misting can be removed easily, too. On top of the light fixture (inside the slide) there is a cap that can be removed. Mine was stuck down pretty good, but enough of an opening that allowed moist air to enter and cloud it up.
You can take off the cap in the sun and let it dry, or put a dessicant packet in/over/suspended, etc. to remove the moisture. I happened to find ones that were part of the cap on a medicine bottle that worked great.
When done, reinstall the cap and then seal it with silicone (easily removed later, if needed).
Both jobs, together, take about an hour with all the right tools and supplies.